Beijing Oupu Optic Instrument Co., Ltd. was founded in 2001 and is located in Tongzhou District of Beijing. We have advanced technologies and equipment, hardworking and ambitious managers, technicians with innovative spirit as well as skillful production workers. We have created a series of high-quality products based on scientific management and our enterprising spirit of ceaseless pursuit of brilliant and perfect products. There are series of products now we can offer. They are deeply welcomed by domestic and foreign customers. The products include: door viewer, door scope, Far and Near door viewer, fireproof door viewer